Thermostatic air control



July 9, 1929. A. A. RICCIO 1.720.572

THERMOSTATIC AIR CONTROL Filed July 14, 1927 WITNESSES lNVEN-l-OR Aim AMBER A? fi/cc/o {/5 I BY ATTORNEYS Patented July 9, 1929. 1

UNITED STATES ALEXANDER A. RICOIQ OF NEW YORK, N. Y.

THERMOSTATIG AIR CONTROL.

Application filed July 14,

This invention relates to thermostatic air control, an object of the invention being to provide a device of this character adapted to be disposed at any point desired in a room and which automatically controls the flow or seepage of air or other fluid to regulate the opening and closing of radiator valves so as to automatically regulate the temperature of a room or other space.

The invention has particularly to do with the construction of the controlling device and this device is of simple, inexpensive construction, strong and durable in use.

WVith these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts, which will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings Figure 1 is a view in section through a room or building, showing how my improved device is installed for operation;

Figure 2 is a view in elevation of my improved device with the guard or casing there on;

Figure 3 is a view of the device with the guard or casing removed;

Figure 4 is a view in longitudinal section on the line 44 of Figure 2;

Figure 5 is a view in transverse section on the line 55 of Figure 3; v

Figure 6 is a view in transverse section on the line 66 of Figure 3.

1 represents a room or building having an ordinary radiator 2 therein, which we will assume is a steam radiator, although my invention is not limited to the particular heating element employed. 3 is a diaphragm valve of standard form which closes by pressure and controls the passage of steam to the radiator tube, and this valve is operated by air pressure from a pipe line 4 which is operatively connected with my improved thermostat control device A, which may be located at any point in the room desired. 5 repre sents an air pressure tank and 6 a pipe connecting the pressure tank with my improved controlling means. I may employ of course any suitable means for supplying air but I have shown a tank for illustrative purposes.

My improved device comprises a body 7 which may consist of a casting which is hollow, forming an air chamber 8. This body may have perforated ears 9 for the reception of screws 10 to secure the same to a wall or 1927. Serial No. 205,655.

other support, and a perforated casing or guard 11 may be secured over the device through the medium of the attaching screws 10, as clearly shown in Figure 2.

The upper end of the body 7 is drilled or castor otherwise made to form ducts 12 and 13, respectively, extending transversely into the end of the body and communicating with vertical bores or ducts 14. The outer ends of these ducts 14 may be closed by screw plugs 15 while the inner ends communicate with the air chamber 8. i i

The pipe 6 above referred to communicates with duct 13 and the pipe 4 with duct 12. A seepage nipple 16 is disposed in the wall of the body 7 and communicates with the airchamher 8. This seepage nipple is opened and closed through the medium of a thermostat 17 the latter preferably having a soft metal seat 18 to engage the end of the nipple 16.

The thermostat 17 is of the strip or tongue type, consisting of two thicknesses of different metals, having its upper end bent at an angle and secured to a pivot block 19. This pivot block 19 is pivotally supported by a pair of screws 20 projected through upwardly projecting lugs 21 on the body 7 A coil spring 22 is'disposed between the block 19 and the upper end of the body 7 to exert a pressure on the block tending to move the thermostat in one direction, and a set screw 23 is mounted in a crossbar 24 above the block 19 and engages the block above the spring 22 to limit the pivotal movement of the block in one direction.

On this screw 23 a curved scale plate 25 is secured and is adapted to register with a mark 26 on the casing 11 so that this scale may be turned, causing the screw to turn and vary the position of the block 19 to the corresponding position of the thermostat 17 to cause the latter to close the nipple 16 at any temperature desired.

The operation is as follows:

When the nipple 16 is closed by the thermostat 17 as shown in Figure 4, air is permitted to flow from the tank 5 through pipe 6 into chamber 8, thence out through pipe 4 to the valve 3 to hold the valve 3 closed and prevent steam from entering the radiator 2, thus allowing the temperature of the room to fall. When the temperature of the room reaches the desired degree the thermostat 17 bends in the direction to draw the seat 18 away from the nipple 16, allowing the air to escape or seep from the chamber 8, thus reducing the pressure in the line and allowing the valve 3 of the radiator 2 to open.

Hence the closing of the valve 3 is caused by the closing of the seepage nipple 16 by the thermostat 17, and this may be regulated by causing the screw 23 to turn through the medium or the scale plate 25, as above explained.

WVhile'I have illustrated what I believe to be preferred embodiments of my invention, it is obvious that various changes and alterations might be made in the general form of the parts described without departing from my invention and hence I do not limit myself to the precise details set forth but consider myself at liberty. to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

' 'I' claim: p

1. A device of the character described, including a body having an air chamber therein, said body having inlet and outlet ducts communicating, with said chamber, a seepage nipple communicating with the air chamber, a pivoted block on the body, a thermostat in the form of a metal tongue secured to the block, a seat on said thermo stat adapted to engage the end of the nipple, a spring exerting pressure on said block to move it in one direction, and a screw engaging the other side of the block limiting its movement whereby the normal position of the thermostat is adjusted.

2. A device of the character described, including a body having an air chamber therein, said body having inlet and outlet duets communicating with said chamber, a seepage nipple communicating with the air chamber, a pivoted block on the body, a thermostat in the form of a metal tongue secured to the block, a seat on said thermostat adapted to engage the end of the nipple, a spring exerting pressure on said block to move it in one direction, a screw engaging the other side of theblock limiting its movement whereby the normal position of the thermostat is adjusted, and a scale plate cured to said screw.

ALEXANDER A. RICGIO. 

